Attachment to threshing-machine sieves.



No. 836,325. PATBNTED NOV. 27, 1906.

P.E J.' PBLLoWsKI. ATTACHMENT To -THRESH'ING MACHINE sIBVBs.

APPLICATION FILED IEB.23,1906. I

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ATTACHMENT TO THRESHING-NIACHINE SIEVES.

Specification of Letters Patent.

Patented Nov. 27,1906.

Application filed February 23, 1906. Serial No. 302.468.

To (LZ/f wil/ont it 'may concern:

Be it known that I, FRANK J. PELLowsKi, a citizen of the United States,residing at Arcadia, in the county of Trempealeau and. State ofWisconsin, have invented certain new and useful Improvements inAttachments to Threshing-NIachine Sieves and I do declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

My invention relates to improvements in threshing-machines, and moreparticularly to the sieves or screens thereof.

The object of the invention is to provide a simple and inexpensivedevice which may be readily attached to a thresher-machine sieve tocatch broken thresher-teeth or other hard objects which might whenpassing off of the sieve be returned by the elevator to thethresher-cylinder and cause damage.

With the above and other objects in View the invention consists ofcertain novel features of construction, combination, and arrangement ofparts hereinafter described and claimed.

In the accompanying drawings, Figure l is a transverse sectional viewthrough my improved attachment, showing it applied to a' thresher-sieve.Fig. 2 is a top plan view of the same, and Fig. 3 is a view of the outerside of the attachment. f

Referring to the drawings by numeral, 1 denotes the usual sieve of athreshing-machine, which has removably secured. upon its rear or outercross-bar 2 my attachment 3. The latter is in the form of atransverselyextending trough of substantially U form in cross-sectionand preferably constructed of sheet metal, bent as shown and perforatedwith two or more rows of perforations 4 in its bottom 5 and a row ofperforations 6 in its outer side 7 adjacent to its bottom. ts inner side8 has an angularly-bent iiange 9, which engages the under face of thecross-bar 2 of the sieve-frame and is apertured to receivefastening-bolts 10. The latter pass vertically through the cross-bar 2and through the perforated inner ends of straps or braces l l, whichhave their rear ends riveted or otherwise secured, as at 12, to theupper edge of the outer side 7 of the trough. The openings i orperforations 4 6 in the trough are of suffij cient size to permit thechad to drop through the same, but prevent the passage of brokenthresher-teeth or any hard substances that are of sufficient size toinjure the thresheri cylinder and its concave should they be returnedthereto by the usual elevator upon the machine.

From the foregoing description, taken in connection with theaccompanying drawings, the construction, operation, and advantages ofthe invention will be readily understood without requiring a moreextended explanation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of the invention as defined by theappended claim.

I-Iaving thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is`

The combination with a threshing-niachine sieve having a rear cross-bar,of a transversely-extending, open-top trough of substantially U form incross-section, adapted to receive grain and heavy material passing overthe screen, provided in its bottom and one sido with openings of a sizeadapted to pass grain but retain heavy foreign material of a size largerthan grain, having upon the upper edge of its inner side anangularlyprojecting attaching-flange adapted to engage the under face ofsaid cross-bar, and straps or brackets secured at their outer ends tothe outer side of said trough and having their inner ends engaged withthe upper face of said cross-bar, and fastening-bolts or the like passedthrough said straps, said crossbar and said attachingiiange, saidstraps, flange and bolts securing the trough to the sieve for movementtherewith.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

FRANK J. PELLOWSKI.

Vitnesses EMIL Scow, IvAN HENsEL

